The easiest way is to use (& to memorize) the sum formula for a AP:
Sum = 1st term added to the last term & multiplied by half the number of terms
S = (a+l)n/2
S = (5 + 53)(7/2) = 203
The answer is A and B. I showed my work below. I hope it makes sense. Let me know if you have any questions.
3/4 can be sliced from three pieces
Answer:
Milan puts 1/4 of her lawn-mowing money in savings and uses 1/2 of the remaining money to pay back her sister. If she has $15 left
Step-by-step explanation:
Answer:
2 and 8
Step-by-step explanation:
Larger number = y
Smaller number = x
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y = 2x+4
y - x = 6 -> y= x+6
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x + 6 = 2x + 4
2 = x
y = x+ 6
y = 2 + 6
y = 8
Hope this makes sense!!!!
